<template>
  <view class="viewport" v-if="!isLoading">
    <!-- 搜索框 -->
    <view class="search">
      <view class="input">
        <text class="icon-search">女靴</text>
      </view>
    </view>
    <!-- 分类 -->
    <view class="categories">
      <!-- 左侧:一级分类 -->
      <scroll-view class="primary" scroll-y>
        <view
          class="item"
          v-for="(item, index) in categoryList"
          :key="item.id"
          :class="{ active: index === activeIndex }"
          @tap="activeIndex = index"
        >
          <text class="name">{{ item.name }}</text>
        </view>
      </scroll-view>
      <!-- 右侧:二级分类 -->
      <scroll-view class="secondary" scroll-y>
        <!-- 焦点图 -->
        <XtxSwiper class="banner" :list="bannerList"></XtxSwiper>
        <!-- 内容区域 -->
        <view class="panel" v-for="item in subCategoryList" :key="item.id">
          <view class="title">
            <text class="name">{{ item.name }}</text>
            <navigator class="more" hover-class="none"> 全部 </navigator>
          </view>
          <view class="section">
            <navigator
              :url="`/pages/goods/goods?id=${goods.id}`"
              open-type="navigate"
              hover-class="none"
              v-for="goods in item.goods"
              :key="goods.id"
              class="goods"
            >
              <image :src="goods.picture" mode="scaleToFill" />
              <view class="name ellipsis">{{ goods.name }}</view>
              <view class="price">
                <text class="symbol">¥</text>
                <text class="number">{{ goods.price }}</text>
              </view>
            </navigator>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
  <template v-else>
    <CategorySkeleton></CategorySkeleton>
  </template>
</template>
<script setup lang="ts">
import { getCategoryTopAPI } from '@/services/category'
import { onLoad } from '@dcloudio/uni-app'
import { computed, ref } from 'vue'
import type { CategoryTopItem } from '@/types/category'
import type { BannerItem } from '@/types/home'
import { getHomeBannerAPI } from '@/services/home'
import CategorySkeleton from './components/CategorySkeleton.vue'

// 骨架屏展示标识
const isLoading = ref(false)
// 获取轮播图数据
const bannerList = ref<BannerItem[]>([])
const getBannerData = async () => {
  const res = await getHomeBannerAPI(2)
  bannerList.value = res.result
}

// 获取分类列表的数据
const categoryList = ref<CategoryTopItem[]>([])
const getCategoryTopData = async () => {
  let res = await getCategoryTopAPI()
  categoryList.value = res.result
}
// tab 点击的下标
const activeIndex = ref(0)
// 提取当前计算的二级分类数据
const subCategoryList = computed(() => {
  return categoryList.value[activeIndex.value]?.children || []
})
onLoad(async () => {
  isLoading.value = true
  await Promise.all([getBannerData(), getCategoryTopData()])
  isLoading.value = false
})
</script>
<style lang="scss">
page {
  height: 100%;
  overflow: hidden;
}
.viewport {
  height: 100%;
  display: flex;
  flex-direction: column;
}
/** 搜索框 */
.search {
  padding: 0 30rpx 20rpx;
  background-color: #fff;
  .input {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64rpx;
    padding-left: 26rpx;
    color: #8b8b8b;
    font-size: 28rpx;
    border-radius: 32rpx;
    background-color: #f3f4f4;
  }
}
.icon-search {
  &::before {
    margin-right: 10rpx;
  }
}
.categories {
  flex: 1;
  min-height: 400rpx;
  display: flex;
}
/** 一级分类 */
.primary {
  flex: none;
  overflow: hidden;
  width: 180rpx;
  background-color: #f6f6f6;
  .item {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 96rpx;
    font-size: 26rpx;
    color: #595c63;
    position: relative;
    &::after {
      content: '';
      position: absolute;
      left: 42rpx;
      bottom: 0;
      width: 96rpx;
      border-top: 1rpx solid #e3e4e7;
    }
  }
  .active {
    background-color: #fff;
    &::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      width: 8rpx;
      height: 100%;
      background-color: #27ba9b;
    }
  }
}
.primary .item:last-child::after,
.primary .active::after {
  display: none;
}
/** 二级分类 */
.secondary {
  background-color: #fff;
  /** 找对应组件下的类名来设置 */
  .carousel {
    height: 200rpx;
    margin: 0 30rpx 0;
    border-radius: 4rpx;
    overflow: hidden;
  }
  .panel {
    margin: 0 30rpx 0;
    .title {
      height: 60rpx;
      line-height: 60rpx;
      color: #333;
      font-size: 28rpx;
      border-bottom: 1rpx solid #f7f7f8;
      .more {
        float: right;
        padding-left: 20rpx;
        font-size: 24rpx;
        color: #999;
      }
    }
    .more {
      &::after {
        font-family: 'erabbit' !important;
        content: '\e6c2';
      }
    }
    .section {
      width: 100%;
      display: flex;
      flex-wrap: wrap;
      padding: 20rpx 0;
      .goods {
        width: 150rpx;
        margin: 0 30rpx 20rpx 0;
        &:nth-child(3n) {
          margin-right: 0;
        }
        image {
          width: 150rpx;
          height: 150rpx;
        }
        .name {
          padding: 5rpx;
          font-size: 22rpx;
          color: #333;
        }
        .price {
          padding: 5rpx;
          font-size: 18rpx;
          color: #cf4444;
        }
        .number {
          font-size: 24rpx;
          margin-left: 2rpx;
        }
      }
    }
  }
}
</style>
